Transmission mechanism.



R. L. MORGAN. n TRANSMISSION MBGHANISM. APPLICATION FILE-D PEB. 26, 1910.

Patented NOV. 21, 1911.

RALPH L. Mensen, or WORCESTER, MAssAori'iUsE'rTs. A

TRANSMISSION MECHANISM.

Specification of Letters Patent. Patented N 0V. 21, 1911.

Appliation mea February' as, 1910: serial No. 546,245'.

To all whom it may concern:

Be it known that I, RALPH' L. MORGAN, a citizen of the United` States,y residing at lVorcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Transmission Mechanism, of which the following is a'speeilication.

This invention relates to driving mechanism for automobile trucks and similar vehieles. Y

The principal bbjects of the invention are to p connect-ion with any ordinary form of dif#- ferential gearing for driving the jack shaft and sleeve, whereby the two sprocket wheels or other transmitting devices can be made to operate positively in unison when' de'- sired, and to provide such a means of a simple, durable and convenient construction without materially increasing the cost of the transmission and without introducing any complications into the' ordinary operation of the device.

Further objects and advantages of the inventionwill appear hereinafter. Reference is to be had to the accompanying drawings in' which-y Figure 1 is a centra-l horizontal sectional view of a portion of the driving mechanism of an automobile truck or the like constructed in accordance with this invention. Fig. 2 is an elevation of one of the sprocket wh -2elsl"ig. 3 is a similar elevation of the locking wheel therefor and Fig. is an end elevation of the casing. l As ordinarily constructed automobile transmission mechanisms are provided with differential gearing` adapted toA drive the jack shaft and the sleeve thereon at the same s peed under ordinary conditions, but capable of permitting one to rotate faster than the other as is necessary in turning corners. Qin this account the twoy sprocket wheels or their driving devices which are connected with the jackH shaft and sleeve, respectively yare noti positively connected and conseqently, at times when one wheel is in a hole .or meets some other obstruction, that wheel will'be retarded and' the other wheel cannot positively and eiliciently assist it in getting over the obstruction. This` invention is designed to overcome this diiiculty in a very simple and efficient manner by the employment of removable means adapted to be carried by the operator or on the machine, so construclvd that-it can be applied in case provide an efficient constructionin of a ditiiculty of this kind to* positively connect the shaft and sleeve or the two sprocket wheels so that bothof them will be caused positively to rotate together, whereby the obstructed Wheel over the obstacle.

Referring to the drawings, a form of transmission mechanism is illustrated in which the casing 10 (preferablyofvbronze) contains driving shaft 11, jack shaft l2 and sleeve or quill 13 concentric with the jack shaft. The driving 'shaft is shown as having an integraldriving bevel pinion 14 meshing with a bevel gear 15 which through the dif- With the jack shaft and a gear 18y integral `with the sleeve. On. account of these integral constructions, keys are dispensed with. This differential provides, as has been stated, for permitting either jack shaft or sleeve to is turning a corner or the like'. The outboard supports of the counter shaft casing are carried in large ball and socket joints 19 supported by U-bolts 29 from the frame.

AOn one end of the jack shaft is fixed a driving 'member 20 shown as a sprocket wheel. On the opposite end of the sleeve is fixed a correspondin driving member or sprocket wheel 21. T e jack shaft extends through the sleeve and projects from the end mounted a locking wheel 22. This locking `wheel is shown as flanged over at 23 so as to engage a projecting shoulder 24 on the sprocket wheel and protect the bearing surface between them from the entrance of dirt.

The sjiiro'cket wheel is provided with a pluralityof pcrforations or sockets 25 into which tits a removable locking pin 26. The locking wheel is shown asy provided with n number of lperforations 27 through which the pin can pass. Obviously when the pin extends through one of the perforations 27 into onel of the perforations 25, the two wheels 21 and 22 will be locked positively together so that all the power transmitted `through the differential will be applied equally tothe twoavheels and either one will tion. In order that it may be easy at all ftgimes't'o insert the pin 2G through the holes in the two wheels, it is preferred `tou make the number of holes in one of thcrifllrger than the number inthe other. Folflthnce,

they both act with full efficiency to moveferential Gears' 1(5,drives a ear 17 inteo'ral .s g o thereof and on this projecting end is ixedly assist' the other in passing'o'ver an obstrucrotate faster than the other when the vehicle ioo Vin the construction illustra'te'djjtthee: VVareK Ammin@ eight holes Q5 in the Sprocket wheel andnine l one of said wheels having a socket therein, a holes 2T in the locking wheel. In addition l member. and m -anS for locking Said devlce `to this the pin is made to fit frictionally tight in the holes and the holesl 2T are made consideably larger So that whatever the relative. positions of these two wheels there will be found two holes somewhere around the eircuniference which almost or exactly coineide so thatthc pin can be inserted. with a eo-llar or flange` larger than t-he holes 2T for an obvious purpose.

It will be seen that the above ydescribed advantages are secured in a most simple? construction de` 3 and inexpenshe way by the The pin is shown' as provideitv srribed and that the locking pin which is;

the only part that does not have to be carried by the driving mechanism can be carried about by the operator very easily.

ll'hile l' have illustrated and described a preferred embfaliment of the invention, f am aware that many mmlifieations ean be made therein by any person skilled in the art without departing from the scope of `the invention as expressed in the elaims.- There fore l do not wish to be limited to all the delails'shown and deseribed, but

l. ln a transmission mechanism` the combination `ofa driving shaft, differential gearingl eonnerted therewith. a jack shaft and a concentric sleeve driven by the` diti'erl ential gearing. power transmitting devicesl longitudinallyr :1nd laterally fixed on the iaeh .shaft and sleeve respeetively, and removable )nears for positively lorliing the power transmitting' devices together.

2. ln a transmission meehanism the eombination ol' two rotary power trmismitlint;r y

.vhi-els. a wheeltixed longitudinally and lati-rallyI with respect to one ol the power transmitting' wheels, and removable means for litint;- the same to the other power tra nsmitting wheel.

I. In a deviee of the, eharaclcr described, the eomhiimtion of two rotary members'one lorated within the other, a power transmittingl wheel on each of said rotary nhanbers lot-king device fixed on the other-rotary to the wheel having the socket.

4. ln a transmission mechanism, the combination of a slzrtt,` and concentric sleeve, means for simultaneously driving the Shaft and sleeve, power transmitting devices on the shaft and sleeve respectively, a locking' wheel fixed to the shaft and provided with perforations, and a pin adapted to project through one ot' the perforations, the power transmitting device on the sleeve having a perforation for receiving the pin.

5. In a device of the character described, the conibination of a shaft, a sleeve rotatable thereon, a sprocket wheel fixed to one end ot the shaft, a sprocket wheel fixed to the other end of the sleeve, said shaft extending through the sleeve beyond the last namedv sproeltet wheel, a locking,r wheel fixed to the projecting `end ot' the. shaft and provided with a perforation, the sprocket wheel on the sleeve having a plurality of perfo-A ing wheel fixed on the other of said members` eaeh ol' said wheels having` a plurality of perforations at the same distance from tlTe axis of the shaft, thc pert'orations in one wheel being greater in number than those in the other, and a pin adapted to project through one wheel into the other and fitting Vfrictionally in the perlorations"therein.4

in testimony whereof l have hereunto set my hand, in the presence oli two slIbseribiintg` w itnesses.

RALPH L. MORGAN. Witnesses;

liolls lV. Sovrnoivrn, ALnnn'r l". [,tAY. 

